Manuals / Roberts Gorden / Household Appliance / Gas Heater

Roberts Gorden CTU 22 TO 115 service manual Ignition Electrode and Flame Probe

Models: CTU 22 TO 115

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SECTION 16: REMOVAL AND REPLACEMENT PARTS

16.3 Ignition Electrode and Flame Probe

Burners

Flame

Probe

Remove all

burner compartment screws to remove

the burner

compartment and

access the

“Front View”.

Burner Compartment

Front Views

Ignition

Electrode

.120

(3 mm)

spark

gap

Burners

Thermostat

Limit

Thermodisc

Flame Probe

Remove

Screw

Ignition

Electrode

To replace the ignition electrode or flame probe, remove the electrical lead and screw. Pull out from mounting. Refit in reverse ensuring that the gap to burner is as shown in the front view of the burner compartment.

Description	Part Number
Spark Electrode	90427411
Automatic Ignition Flame Probe	90439300
Burners (all models except CTU-40)	92000000
Burners - CTU-40	92000001

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Roberts Gorden CTU 22 TO 115 service manual Ignition Electrode and Flame Probe

Contents

If you smell gas CombatQuality in Any Language Page 2007 Roberts-Gordon,LLC Page TABLE OF FIGURES Page Product Approval 2.2 Corrosive Chemicals SECTION 1 HEATER SAFETYSECTION 2 INSTALLER RESPONSIBILITY 2.1 Clearances to Combustibles3.6 Gas Supply 3.3 Minimum Required Installation Clearances3.4 Clearances to Combustibles 3.5 VentilationInstallation Clearances End View SECTION 4 SPECIFICATIONS 4.1 CTUADimension Data - CTUA All Models Top View4.2 CTUB, CTUC and CTUD Dimension Data - CTUB, CTUC and CTUD4.3 General Technical Data Table 4.4Technical Data Table Appliance Category II 2H/L 3B/P 5.3 Shelf Mounting and Suspension SECTION 5 HEATER INSTALLATION 5.1 General5.2 Handling Figure 2 Suspension Methods6.3.1 Air Intake Terminal Cover terminal. See Page 11, Figure6.3 Type B22 Appliance See Page 10, Figure 3 through Page 11, FigureRoof Terminal SECTION 7 AIR SUPPLY 7.1 Room Sealed Installation7.2 Open Flued Installation 7.2.1 Heaters Installed Within the Heated Space8.1.1 CTUD Heaters SECTION 8 OPTIONAL HEATER CONFIGURATIONSFigure 8 Ducting 9.1 Connections SECTION 9 GAS PIPINGModels SECTION 10 WIRING AND ELECTRICAL INFORMATION10.2 Remote Controls 10.1 Electrical SupplyIGNITION MODULE 10.3 CTUA Wiring Diagram ModelsIGNITION MODULE 10.4 CTUA Wiring Diagram Models SITE WIRINGSECTION 10 WIRING AND ELECTRICAL INFORMATION IGNITION MODULE SITE WIRING10.5 CTUB/C Wiring Diagram Models IGNITION MODULEIGNITION MODULE 10.6 CTUB/C Wiring Diagram ModelsSITE WIRING SECTION 10 WIRING AND ELECTRICAL INFORMATIONSITE WIRING 10.7 CTUB/C Wiring Diagram ModelsSITE WIRING 10.8 CTUD Wiring Diagram ModelsFor external fan wiring See Page 23, SectionSITE 10.9 CTUD Wiring Diagram ModelsSee Page 23, Section Single Phase Motor with Load over 7 Amps 11.1.2 Electrical Checks SECTION 11 COMMISSIONING11.1 Pre-CommissionChecks 11.1.1 LouvresFigure 11 Gas Valve for Heater Models Figure 10 Automatic Burner Control Box Sequence11.6 Turning Off the Heater 11.5 Combustion TestingFigure 12 Gas Valve for Heater Models Check Gas Rate11.8 Complete the Commissioning 11.7 External Controls11.9 Instruction to the User Figure 13 Heater Operating Sequence 12.3.2 Burner Lockout Reset ButtonSee Page 28, Section 12.2 Heater OperationSee Page 5, Section 12.5 Simple Fault Finding12.5.1 Simple Fault Finding Burner Faults 12.4.2 To Turn the Heater Off13.5 Gas Control Valve Maintenance 13.2 Burner Maintenance13.3 Fan/Motor Assembly Maintenance 13.4 Heat Exchanger Maintenance14.2 Burner Conversion SECTION 14 CONVERSION BETWEEN GASES 14.1 General14.3 Gas Valves SECTION 15 TROUBLESHOOTING 15.1 General Conduct Commissioning procedure as shown For your safety and optimum heater performanceon Page 24, Section 15.4Troubleshooting for Solenoid Valves 15.3Troubleshooting for Flame Supervision System16.1.1 Models SECTION 16 REMOVAL AND REPLACEMENT PARTSBurner Components 16.1 Gas ValveEnsure correct alignment with burners 16.2 Burner Compartment16.2.1 Burner Injectors Ensure gas tight fitting of injectors16.3 Ignition Electrode and Flame Probe 16.4 Flue Fan 16.5 Pressure Switch 16.8.1 Fan Removal and Replacement 16.7 CTUA Axial Fan/Guard/Motor Assembly16.7.1 Fan Removal and Replacement 16.7.2 To Replace the Fan Assembly16.9 Fan Data Figure 14 Centrifugal Fan OrientationPage Page Page close to heater Fire Hazardinjury or property damage